Home / 3,008.40-4,512.68-1,275.80

Finding the Fourth Proportional to 3,008.40, 4,512.68 and 1,275.80

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Solution

The fourth proportional to 3,008.40, 4,512.68 and 1,275.80 is: 1,913.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,008.40 : 4,512.68 = 1,275.80 : x
  2. Step 2: Convert to fraction form
    3,008.40/4,512.68 = 1,275.80/x
  3. Step 3: Cross multiply
    3,008.40x = 4,512.68 × 1,275.80
  4. Step 4: Simplify right side
    3,008.40x = 5,757,277.14
  5. Step 5: Solve for x
    x = 5,757,277.14/3,008.40
  6. Step 6: Final answer
    x = 1,913.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.